While-While

As Ken Thompson showed, you can never trust a compiler. His most famous example was of a trojan compiler, though he later refined the model. Lesser know is his example of the trojan-less compiler: it meets your sister in a bar, buys her a couple of drinks, and the next thing you know you've got a shotgun and a preacher. That's when the compiler skips town.

That, of course, is an extreme example; and as much as we all like extreme programming, it doesn't exactly reflect reality. Given a shortage of power drinks, you can often get less rowdy compilers to do what you want by speaking slowly and repeating key phrases. Realizing this, Anders sent in a perfect example, taken from a module loader.